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Trimble R12i / R10 RTK Setup: Trimble Access

Connect the Trimble R12i, R10, and R750 to RTKdata NTRIP in Trimble Access. Create a Single Base RTCM v3 style (not VRS), mountpoint AUTO, for centimeter RTK.

The Trimble R12i, R10, and R750 are professional survey-grade GNSS receivers delivering centimeter-level accuracy for land surveying, construction, and geospatial applications. The R12i features Trimble ProPoint GNSS engine and tilt compensation for measurements without leveling the pole. These receivers are configured through Trimble Access software running on a TSC5, TSC7, or T7 controller connected via Bluetooth or Wi-Fi.

Requirements

  • Trimble R12i, R10, or R750 powered on with clear sky visibility

  • Trimble Access software on a TSC5, TSC7, or T7 controller

  • Internet connection on the controller (cellular modem, phone hotspot via Bluetooth, or Wi-Fi)

  • RTKdata.com account with active RTK credentials (username starting with rtk and password from your RTK dashboard)

  • Survey pole with Trimble quick-release adapter

Don't have an RTKdata.com account yet? Start 30-day Free Trial or View Pricing

Step-by-step setup

RTKdata delivers single-baseline RTCM corrections, not VRS. You must create a Single Base / RTCM survey style. Do NOT select "Network RTK," "VRS," "iMAX," or "CMRx." Using the wrong style will cause the survey to hang at 90% during startup.

1

Create a new survey style

  1. In Trimble Access, tap Settings (gear icon) → Survey Styles.

  2. Tap New to create a fresh style.

  3. Name it RTKdata Single Base.

  4. Under Positioning type, select RTK.

2

Configure rover correction source

  1. Inside the new style, tap Rover options.

  2. Set Correction source to Internet connection.

  3. Set Correction type to RTCM v3.

Do NOT select VRS, iMAX, or CMRx as the correction type. RTKdata uses standard RTCM 3.x single-baseline corrections.

3

Enter RTKdata.com NTRIP settings

Tap NTRIP settings and fill in the fields. Select the tab for your region:

  • Host (domain): rtk.rtkdata.com

  • Host (IP fallback): 13.56.117.10

  • Port: 2101

  • Username / Password: From RTK Credentials in the internal dashboard (not website login)

  • Mountpoint (ALL CAPS): AUTO

  • Host (domain): eu.rtkdata.com

  • Host (IP fallback): 3.73.41.96

  • Port: 2101

  • Username / Password: From RTK Credentials in the internal dashboard (not website login)

  • Mountpoint (ALL CAPS): AUTO

  • Host (domain): aus.rtkdata.com

  • Host (IP fallback): 54.206.56.130

  • Port: 2101

  • Username / Password: From RTK Credentials in the internal dashboard (not website login)

  • Mountpoint (ALL CAPS): AUTO

Type the mountpoint manually: do not browse the source table.

4

Start the survey

  1. Return to the main screen and tap Survey → Start survey.

  2. Select the RTKdata Single Base style you just created.

  3. Trimble Access will connect to the internet, then to RTKdata's NTRIP caster.

  4. Wait for the solution to progress: Autonomous → Float → Fix.

  5. Once at Fix, the controller displays accuracy estimates and you can begin collecting points.

R12i tilt compensation

The R12i includes Trimble's ProPoint engine with IMU-based tilt compensation. Once connected to RTKdata with a Fix solution, tilt compensation initializes automatically. You do not need to level the pole: simply hold it near-vertical and the receiver compensates for up to 30 degrees of tilt. A tilt icon appears on the controller when tilt compensation is active.

Trimble Catalyst DA2

The Trimble Catalyst DA2 works with RTKdata, but the rules are different from the receivers above: a Catalyst subscription is mandatory and already includes Trimble corrections, the subscription tier caps the accuracy even with an external caster, and the free tier rejects third-party sources entirely. Corrections are configured in Trimble Mobile Manager, not in the field app. Read Trimble DA2 and Catalyst before you buy a subscription for this.

Vertical reference (heights)

Heights from RTKdata.com are ellipsoidal, not orthometric (mean sea level). Apply a geoid model in Trimble Access (Settings → Coordinate system → Vertical adjustment) if your project requires MSL heights.

Troubleshooting

Problem
Cause
Fix

"Starting survey" stuck at 90%

VRS or Network RTK style selected

Delete the style and create a new one using RTCM v3 correction type, not VRS/iMAX.

"Mount point not found"

Wrong capitalization or typo

Type AUTO in ALL CAPS. Do not browse the mountpoint list.

No internet connection

Controller not connected to network

Pair your phone via Bluetooth for internet sharing, or use the controller's built-in cellular modem.

Float only, never reaches Fix

Obstructed sky or large baseline

Move to open sky. Check that RTKdata has base station coverage in your area via the coverage map.

Corrections disconnect mid-survey

Unstable cellular connection

Check signal strength. The receiver will auto-reconnect when the connection stabilizes.

Tips and tricks

  • Always use RTCM v3: this is the only correction type compatible with RTKdata's single-baseline architecture.

  • Save the survey style so your crew can reuse it across projects without reconfiguring each time.

  • Check correction age on the controller status bar. If it exceeds 5 seconds, your internet connection may be dropping.

  • For the R750 machine receiver, configure the same NTRIP settings through Trimble SitePulse or Trimble WorksOS instead of Trimble Access.

  • Firmware updates improve RTK performance. Keep your receiver and Trimble Access up to date via Trimble Installation Manager.

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